68990558

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 136442880

約数和(自身を除く): 67452322

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 71, 91, 133, 142, 182, 247, 266, 281, 494, 497, 562, 923, 994, 1349, 1729, 1846, 1967, 2698, 3458, 3653, 3934, 5339, 6461, 7306, 9443, 10678, 12922, 17537, 18886, 19951, 25571, 35074, 37373, 39902, 51142, 69407, 74746, 122759, 138814, 139657, 245518, 259363, 279314, 379069, 485849, 518726, 758138, 971698, 1815541, 2653483, 3631082, 4927897, 5306966, 9855794, 34495279, 68990558]

約数ペア:

[(1, 68990558), (2, 34495279), (7, 9855794), (13, 5306966), (14, 4927897), (19, 3631082), (26, 2653483), (38, 1815541), (71, 971698), (91, 758138), (133, 518726), (142, 485849), (182, 379069), (247, 279314), (266, 259363), (281, 245518), (494, 139657), (497, 138814), (562, 122759), (923, 74746), (994, 69407), (1349, 51142), (1729, 39902), (1846, 37373), (1967, 35074), (2698, 25571), (3458, 19951), (3653, 18886), (3934, 17537), (5339, 12922), (6461, 10678), (7306, 9443)]